#361

backend/app/controllers/gekanator_games_controller.rb

@@ -1,6 +1,6 @@
 class GekanatorGamesController < ApplicationController
   def create
-    return head :not_found unless current_user&.admin?
+    return head :unauthorized unless current_user
 
     guessed_post_id = params.require(:guessed_post_id)
     correct_post_id = params[:correct_post_id].presence
@@ -22,10 +22,8 @@ class GekanatorGamesController < ApplicationController
   end
 
   def extra_questions
-    return head :not_found unless current_user&.admin?
-
-    game = GekanatorGame.find_by(id: params[:id])
-    return head :not_found unless game
+    game = find_owned_game
+    return if performed?
 
     questions =
         GekanatorQuestion
@@ -45,10 +43,8 @@ class GekanatorGamesController < ApplicationController
   end
 
   def extra_question_answers
-    return head :not_found unless current_user&.admin?
-
-    game = GekanatorGame.find_by(id: params[:id])
-    return head :not_found unless game
+    game = find_owned_game
+    return if performed?
 
     answer_params = params.require(:answers)
     if !answer_params.is_a?(Array)
@@ -137,4 +133,16 @@ class GekanatorGamesController < ApplicationController
 
     question.priority_weight.to_f / (1.0 + sample_count * 0.15)
   end
+
+  def find_owned_game
+    return head :unauthorized unless current_user
+
+    game = GekanatorGame.find_by(id: params[:id])
+    return head :not_found unless game
+    if !current_user.admin? && game.user_id != current_user.id
+      return head :not_found
+    end
+
+    game
+  end
 end

backend/app/controllers/gekanator_posts_controller.rb

@@ -1,7 +1,5 @@
 class GekanatorPostsController < ApplicationController
   def index
-    return head :not_found unless current_user&.admin?
-
     posts =
         Post
         .preload(tags: :tag_name)

backend/app/controllers/gekanator_question_suggestions_controller.rb

@@ -1,9 +1,12 @@
 class GekanatorQuestionSuggestionsController < ApplicationController
   def create
-    return head :not_found unless current_user&.admin?
+    return head :unauthorized unless current_user
 
     game = GekanatorGame.find_by(id: params.require(:gekanator_game_id))
     return head :not_found unless game
+    if !current_user.admin? && game.user_id != current_user.id
+      return head :not_found
+    end
 
     suggestion = GekanatorQuestionSuggestion.new(
         gekanator_game: game,

backend/app/controllers/gekanator_questions_controller.rb

@@ -1,7 +1,5 @@
 class GekanatorQuestionsController < ApplicationController
   def index
-    return head :not_found unless current_user&.admin?
-
     questions =
         GekanatorQuestion
         .accepted
@@ -49,6 +47,8 @@ class GekanatorQuestionsController < ApplicationController
       "title:length-at-least:#{ condition[:length].to_i + 1 }"
     when 'title-has-ascii'
       'title:ascii'
+    when 'title-contains'
+      "title:contains:#{ condition[:text] }"
     when 'post-similarity'
       "post-similarity:#{ question.id }"
     else
@@ -77,6 +77,8 @@ class GekanatorQuestionsController < ApplicationController
     case condition[:type]
     when 'title-length-at-least'
       "タイトルは #{ condition[:length] } 文字以上?"
+    when 'title-contains'
+      "題名に「#{ condition[:text] }」が含まれる?"
     else
       question.text
     end

backend/app/services/gekanator/question_suggestion_ai_converter.rb

@@ -1,5 +1,15 @@
 module Gekanator
   class QuestionSuggestionAiConverter
+    # Temporary heuristic converter for #361.
+    # This creates pending ai_generated questions without external LLM calls;
+    # accepted questions are still distributed only after admin approval.
+    TITLE_LENGTH_RE = /\Aタイトルは\s*(\d+)\s*文字以上[？?]\z/
+    ORIGINAL_YEAR_RE = /\Aオリジナルの投稿年は\s*(\d{4})\s*年[？?]\z/
+    ORIGINAL_MONTH_RE = /\Aオリジナルの投稿月は\s*(\d{1,2})\s*月[？?]\z/
+    ORIGINAL_MONTH_DAY_RE = /\Aオリジナルの投稿日は\s*(\d{1,2})\s*月\s*(\d{1,2})\s*日[？?]\z/
+    TITLE_CONTAINS_RE = /\A題名に「(.+?)」が含まれる[？?]\z/
+    SOURCE_RE = /\A(.+?)\s+の投稿を思[ひい]浮かべて[ゐい]る[？?]\z/
+
     def self.call(...) = new(...).call
 
     def initialize suggestion:, user:
@@ -8,11 +18,151 @@ module Gekanator
     end
 
     def call
-      raise NotImplementedError, 'AI question conversion is not implemented yet.'
+      suggestion.with_lock do
+        existing = existing_generated_question
+        return existing if existing
+
+        run = suggestion.gekanator_ai_runs.create!(
+            model: 'heuristic_converter_v1',
+            status: 'running',
+            input_tokens: 0,
+            output_tokens: 0,
+            estimated_cost_jpy: 0)
+
+        question_attributes = build_question
+        question =
+            question_attributes &&
+            GekanatorQuestion.create!(
+                **question_attributes,
+                source: 'ai_generated',
+                status: 'pending',
+                gekanator_question_suggestion: suggestion,
+                created_by: user)
+
+        run.update!(status: question ? 'succeeded' : 'failed')
+        question
+      end
+    rescue => error
+      run&.update!(status: 'failed') if run&.persisted? && run.status != 'failed'
+      raise error
     end
 
     private
 
     attr_reader :suggestion, :user
+
+    def existing_generated_question
+      suggestion
+          .gekanator_questions
+          .where(source: 'ai_generated')
+          .order(id: :desc)
+          .first
+    end
+
+    def build_question
+      text = normalized_text
+      return nil if text.blank?
+
+      structured_question_for(text) || post_similarity_question_for(text)
+    end
+
+    def normalized_text
+      suggestion.question_text.to_s.gsub(/[[:space:]]+/, ' ').strip
+    end
+
+    def structured_question_for text
+      case text
+      when TITLE_LENGTH_RE
+        length = Regexp.last_match(1).to_i
+        return nil if length <= 0
+
+        {
+          text:,
+          kind: 'title',
+          condition: {
+            type: 'title-length-at-least',
+            length:
+          },
+          priority_weight: 0.95
+        }
+      when /\A題名に英数字が混じって[ゐい]る[？?]\z/
+        {
+          text: '題名に英数字が混じってゐる?',
+          kind: 'title',
+          condition: { type: 'title-has-ascii' },
+          priority_weight: 0.95
+        }
+      when ORIGINAL_YEAR_RE
+        year = Regexp.last_match(1).to_i
+        {
+          text:,
+          kind: 'original_date',
+          condition: { type: 'original-year', year: },
+          priority_weight: 0.95
+        }
+      when ORIGINAL_MONTH_RE
+        month = Regexp.last_match(1).to_i
+        return nil unless month.between?(1, 12)
+
+        {
+          text:,
+          kind: 'original_date',
+          condition: { type: 'original-month', month: },
+          priority_weight: 0.95
+        }
+      when ORIGINAL_MONTH_DAY_RE
+        month = Regexp.last_match(1).to_i
+        day = Regexp.last_match(2).to_i
+        return nil unless month.between?(1, 12) && day.between?(1, 31)
+
+        {
+          text:,
+          kind: 'original_date',
+          condition: {
+            type: 'original-month-day',
+            monthDay: "#{ month }-#{ day }"
+          },
+          priority_weight: 0.95
+        }
+      when TITLE_CONTAINS_RE
+        title_text = Regexp.last_match(1).to_s.strip
+        return nil if title_text.blank?
+
+        {
+          text: "題名に「#{ title_text }」が含まれる?",
+          kind: 'title',
+          condition: { type: 'title-contains', text: title_text },
+          priority_weight: 0.95
+        }
+      when SOURCE_RE
+        host = Regexp.last_match(1).to_s.strip
+        return nil if host.blank?
+
+        {
+          text:,
+          kind: 'source',
+          condition: { type: 'source', host: },
+          priority_weight: 0.95
+        }
+      else
+        nil
+      end
+    end
+
+    def post_similarity_question_for text
+      return nil if suggestion.answer == 'unknown'
+
+      {
+        text:,
+        kind: 'post_similarity',
+        condition: {
+          type: 'post-similarity',
+          postId: suggestion.gekanator_game.correct_post_id,
+          answer: suggestion.answer,
+          threshold: 0.65
+        },
+        priority_weight: 1.0
+      }
+    end
   end
 end

frontend/src/App.tsx

@@ -40,7 +40,7 @@ import WikiHistoryPage from '@/pages/wiki/WikiHistoryPage'
 import WikiNewPage from '@/pages/wiki/WikiNewPage'
 import WikiSearchPage from '@/pages/wiki/WikiSearchPage'
 
-import type { Dispatch, FC, ReactNode, SetStateAction } from 'react'
+import type { Dispatch, FC, SetStateAction } from 'react'
 
 import type { User } from '@/types'
 
@@ -81,10 +81,7 @@ const RouteTransitionWrapper = ({ user, setUser }: {
 	  <Route path="/users/settings" element={<SettingPage user={user} setUser={setUser}/>}/>
 	  <Route path="/settings" element={<Navigate to="/users/settings" replace/>}/>
 	  <Route path="/tos" element={<TOSPage/>}/>
-	  <Route path="/gekanator" element={
-	      <AdminOnly user={user}>
-		<GekanatorPage/>
-	      </AdminOnly>}/>
+	  <Route path="/gekanator" element={<GekanatorPage user={user}/>}/>
 	  <Route path="/more" element={<MorePage/>}/>
 	  <Route path="*" element={<NotFound/>}/>
 	</Routes>
@@ -92,16 +89,6 @@ const RouteTransitionWrapper = ({ user, setUser }: {
 }
 
 
-const AdminOnly = ({ user, children }: {
-    user:      User | null
-    children:  ReactNode }) => {
-  if (user?.role !== 'admin')
-    return <NotFound/>
-
-  return <>{children}</>
-}
-
-
 const PostDetailRoute = ({ user }: { user: User | null }) => {
   const location = useLocation ()
   const key = location.pathname

frontend/src/components/TopNav.tsx

@@ -66,6 +66,7 @@ export const menuOutline = ({ tag, wikiId, user, pathName }: {
 	  { name: '履歴', to: `/wiki/changes?id=${ wikiId }`, visible: wikiPageFlg },
 	  { name: '編輯', to: `/wiki/${ wikiId || wikiTitle }/edit`, visible: wikiPageFlg }] },
       { name: 'おたのしみ', visible: false, subMenu: [
+	  { name: 'グカネータ', to: '/gekanator' },
 	  { name: '上映会 (β)', to: '/theatres/1' }] },
       { name: 'ユーザ', to: '/users/settings', visible: false, subMenu: [
 	  { name: '一覧', to: '/users', visible: false },

frontend/src/lib/gekanator.ts

@@ -13,6 +13,7 @@ export type GekanatorAnswerLog = {
     questionId:       string
     questionText:     string
     questionCondition?:  GekanatorQuestionCondition
+    questionMode?:    'normal' | 'winning_run'
     answer:           GekanatorAnswerValue
     originalAnswer:   GekanatorAnswerValue }
 
@@ -29,6 +30,8 @@ export type GekanatorQuestionSource =
     | 'ai_generated'
     | 'admin_curated'
 
+export type GekanatorPerformanceMode = 'lite' | 'normal'
+
 export type GekanatorQuestionCondition =
     | { type: 'tag'; key: string }
     | { type: 'source'; host: string }
@@ -38,6 +41,7 @@ export type GekanatorQuestionCondition =
     | { type: 'title-length-at-least'; length: number }
     | { type: 'title-length-greater-than'; length: number }
     | { type: 'title-has-ascii' }
+    | { type: 'title-contains'; text: string }
     | {
 	  type: 'post-similarity'
 	  postId: number
@@ -76,6 +80,13 @@ export type GekanatorQuestion = {
     exampleAnswers?: Record<`${ number }`, GekanatorAnswerValue>
     test:            (post: Post) => boolean }
 
+export type BuildGekanatorQuestionsOptions = {
+    includeTitleContains?: boolean
+    tagQuestionCap?: number
+    titleContainsCap?: number
+    totalQuestionCap?: number
+}
+
 
 export const normalizeTitleLengthCondition = (
     condition:  GekanatorQuestionCondition,
@@ -127,6 +138,8 @@ export const questionIdForCondition = (
     return `title:length-at-least:${ titleLengthMinimumForCondition (condition) }`
   case 'title-has-ascii':
     return 'title:ascii'
+  case 'title-contains':
+    return `title:contains:${ condition.text }`
   }
 }
 
@@ -292,6 +305,8 @@ const questionMatches = (
     return (post.title?.length ?? 0) > question.condition.length
   case 'title-has-ascii':
     return /[A-Za-z0-9]/.test (post.title ?? '')
+  case 'title-contains':
+    return (post.title ?? '').includes (question.condition.text)
   case 'post-similarity':
     return false
   }
@@ -319,6 +334,7 @@ export const expectedAnswerForQuestion = (
   case 'title-length-at-least':
   case 'title-length-greater-than':
   case 'title-has-ascii':
+  case 'title-contains':
     return questionMatches (post, question) ? 'yes' : 'no'
   case 'post-similarity':
     return null
@@ -382,7 +398,16 @@ export const fetchGekanatorExtraQuestions = async (
 }
 
 
-export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
+export const buildGekanatorQuestions = (
+    posts:    Post[],
+    options:  BuildGekanatorQuestionsOptions = { },
+): GekanatorQuestion[] => {
+  const {
+      includeTitleContains = true,
+      tagQuestionCap = 192,
+      titleContainsCap = 24,
+      totalQuestionCap = Number.POSITIVE_INFINITY,
+  } = options
   const tagCounts = countBy (posts.flatMap (post =>
       post.tags
       .filter (tag =>
@@ -404,17 +429,31 @@ export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
       .map (originalMonthDayOf)
       .filter ((monthDay): monthDay is string => monthDay !== null))
   const titleLengthMedian = median (posts.map (post => post.title?.length ?? 0))
+  const titleWordCounts =
+      includeTitleContains
+	? countBy (
+	    posts.flatMap (post =>
+		Array.from (
+		    new Set (
+			(post.title ?? '')
+			.match (
+			    /[\p{Script=Han}\p{Script=Hiragana}\p{Script=Katakana}A-Za-z0-9]{2,}/gu)
+			?? []))))
+	: new Map<string, number> ()
 
-  const usefulEntries = <T extends string | number> (counts: Map<T, number>) =>
+  const usefulEntries = <T extends string | number> (
+      counts:  Map<T, number>,
+      cap:     number,
+  ) =>
       [...counts.entries ()]
       .filter (([, count]) => count > 0 && count < posts.length)
       .sort ((a, b) => Math.abs (posts.length / 2 - a[1])
 	       - Math.abs (posts.length / 2 - b[1]))
-      .slice (0, 80)
+      .slice (0, cap)
 
-  const tagQuestions = usefulEntries (tagCounts)
+  const tagQuestions = usefulEntries (tagCounts, Math.max (tagQuestionCap, 80))
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
-      .slice (0, 80)
+      .slice (0, tagQuestionCap)
       .map (([key]) => {
 	const { category, name } = tagFromQuestionKey (String (key))
 	const label = category === 'nico' ? nicoTagLabel (name) : name
@@ -429,7 +468,7 @@ export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
 	    test: (post: Post) => questionableTag (post, String (key)) }
       })
 
-  const sourceQuestions = usefulEntries (hosts)
+  const sourceQuestions = usefulEntries (hosts, 20)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([host]) => ({
@@ -441,7 +480,7 @@ export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
 	  priorityWeight: 1,
 	  test: (post: Post) => hostOf (post) === host }))
 
-  const originalYearQuestions = usefulEntries (originalYears)
+  const originalYearQuestions = usefulEntries (originalYears, 20)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([year]) => ({
@@ -453,7 +492,7 @@ export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
 	  priorityWeight: 1,
 	  test: (post: Post) => originalYearOf (post) === year }))
 
-  const originalMonthQuestions = usefulEntries (originalMonths)
+  const originalMonthQuestions = usefulEntries (originalMonths, 20)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([month]) => ({
@@ -465,7 +504,7 @@ export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
 	  priorityWeight: 1,
 	  test: (post: Post) => originalMonthOf (post) === month }))
 
-  const originalMonthDayQuestions = usefulEntries (originalMonthDays)
+  const originalMonthDayQuestions = usefulEntries (originalMonthDays, 20)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([monthDay]) => {
@@ -505,6 +544,23 @@ export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
 	const no = posts.length - yes
 	return yes >= 2 && no >= 2 && yes <= posts.length * .7 && no <= posts.length * .7
       })
+  const titleContainsQuestions =
+      includeTitleContains
+	? usefulEntries (titleWordCounts, titleContainsCap)
+	    .filter (([word, count]) =>
+		String (word).length <= 24
+		&& count >= 2
+		&& count <= Math.max (2, posts.length * .7))
+	    .slice (0, titleContainsCap)
+	    .map (([word]) => ({
+		id:   `title:contains:${ word }`,
+		text: `題名に「${ word }」が含まれる?`,
+		kind: 'title' as const,
+		condition: { type: 'title-contains' as const, text: String (word) },
+		source: 'default' as const,
+		priorityWeight: .96,
+		test: (post: Post) => (post.title ?? '').includes (String (word)) }))
+	: []
 
   return [
       ...sourceQuestions,
@@ -512,7 +568,8 @@ export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
       ...originalMonthQuestions,
       ...originalMonthDayQuestions,
       ...titleQuestions,
-      ...tagQuestions]
+      ...titleContainsQuestions,
+      ...tagQuestions].slice (0, totalQuestionCap)
 }
 
 

frontend/src/lib/gekanatorCandidateRecovery.ts

@@ -100,7 +100,7 @@ export const allConcreteAnswerOptionsExhausted = (
 }
 
 
-const nextRecoveryBatchSize = (recoveryStepCount: number): number =>
+const nextRecoveryTargetSize = (recoveryStepCount: number): number =>
     6 * (2 ** recoveryStepCount)
 
 
@@ -125,6 +125,16 @@ export const recoverCandidatePosts = ({
     recoveryStepCount:       number
 } | null => {
   const recovered = new Map (recoveredCandidatePosts)
+  const targetSize = nextRecoveryTargetSize (recoveryStepCount)
+  const countedPostIds = new Set ([
+      ...eligiblePostIds,
+      ...recovered.keys ()])
+  const addCount = targetSize - countedPostIds.size
+  if (addCount <= 0)
+    return {
+	recoveredCandidatePosts: recovered,
+	recoveryStepCount: recoveryStepCount + 1 }
+
   const candidates = posts
       .filter (post =>
 	  !(rejectedPostIds.has (post.id))
@@ -133,7 +143,7 @@ export const recoverCandidatePosts = ({
       .sort ((a, b) =>
 	  (scores.get (b.id) ?? Number.NEGATIVE_INFINITY)
 	      - (scores.get (a.id) ?? Number.NEGATIVE_INFINITY))
-      .slice (0, nextRecoveryBatchSize (recoveryStepCount))
+      .slice (0, addCount)
 
   if (candidates.length === 0)
     return null